Second option twice, but you must not have spoken to anyone else previously, nor can you speak again to Gatta after those two questions. Avoid Save Spheres.

Also, neither Gatta or Luzzu are in FFX-2, because someone (yeah, I'm looking at you, Internet!) figured out that you can kill both, which is not a glitch. Yaibal does not appear in FFX, only in "Eternal Calm" which was released along with FFX International. Clasko doesn't die in either game.

Playing a game three times through is not defined as "alot." Try at least forty-seven, if not more.